137 lines
4.7 KiB
Python
137 lines
4.7 KiB
Python
import logging
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from sys import argv, exit
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from time import sleep
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from tomllib import load
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import paho.mqtt.client as mqtt
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from pyModbusTCP.client import ModbusClient
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from pyModbusTCP.utils import decode_ieee, word_list_to_long
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logging.basicConfig(level=logging.DEBUG)
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LOG = logging.getLogger(__name__)
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class SDM630_MQTT:
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def __init__(
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self,
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config,
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):
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self.modbus = ModbusClient(
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host=config["modbus"]["host"],
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port=config["modbus"]["port"],
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unit_id=config["modbus"]["unit_id"],
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)
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self.modbus.timeout = 1
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self.mqtt = mqtt.Client()
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self.mqtt_host = config["mqtt"]["host"]
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self.mqtt_port = config["mqtt"]["port"]
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self.mqtt_prefix = config["mqtt"]["prefix"]
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self.mqtt.on_connect = self._on_mqtt_connect
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self.mqtt.on_disconnect = self._on_mqtt_disconnect
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def _publish(self, topic, msg):
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LOG.debug(f"_publish({topic!r}, {msg!r})")
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self.mqtt.publish(f"{self.mqtt_prefix.rstrip('/')}/{topic}", msg)
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def _on_mqtt_connect(self, client, userdata, flags, rc):
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LOG.info(f"Connected to mqtt server {self.mqtt_host}:{self.mqtt_port}")
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def _on_mqtt_disconnect(self, client, userdata, rc):
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LOG.info(f"Disconnected from mqtt server {self.mqtt_host}:{self.mqtt_port}")
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def start(self):
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LOG.debug("_start()")
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self.mqtt.connect(self.mqtt_host, self.mqtt_port, 10)
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self.mqtt.loop_start()
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def stop(self):
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self.mqtt.loop_stop()
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self.mqtt.disconnect()
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def request_and_publish(self):
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self.modbus.open()
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for idx, (readable, address) in enumerate(
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{
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"active-power/L1": 0x000C,
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"active-power/L2": 0x000E,
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"active-power/L3": 0x0010,
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"active-power/total": 0x0034,
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"apparent-power/L1": 0x0012,
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"apparent-power/L2": 0x0014,
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"apparent-power/L3": 0x0016,
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"apparent-power/total": 0x0038,
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"current-demand/L1": 0x0102,
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"current-demand/L2": 0x0104,
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"current-demand/L3": 0x0106,
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"current-demand/N": 0x0068,
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"current-demand/max_L1": 0x0108,
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"current-demand/max_L2": 0x010A,
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"current-demand/max_L3": 0x010C,
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"current-demand/max_N": 0x006A,
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"current/L1": 0x0006,
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"current/L2": 0x0008,
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"current/L3": 0x000A,
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"current/average": 0x002E,
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"current/neutral": 0x00E0,
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"current/total": 0x0030,
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"export_kVArh": 0x004C,
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"export_kWh": 0x004A,
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"frequency": 0x0046,
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"import_kVArh": 0x004E,
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"import_kWh": 0x0048,
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"phase-angle/L1": 0x0024,
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"phase-angle/L2": 0x0026,
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"phase-angle/L3": 0x0028,
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"phase-angle/total": 0x003E,
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"power-demand/max": 0x0056,
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"power-demand/total": 0x0054,
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"power-factor/L1": 0x001E,
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"power-factor/L2": 0x0020,
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"power-factor/L3": 0x0022,
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"power-factor/total": 0x003E,
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"reactive-power/L1": 0x0018,
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"reactive-power/L2": 0x001A,
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"reactive-power/L3": 0x001E,
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"reactive-power/total": 0x003C,
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"voltage/L1_L2": 0x00C8,
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"voltage/L1_N": 0x0000,
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"voltage/L2_L3": 0x00CA,
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"voltage/L2_N": 0x0002,
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"voltage/L3_L1": 0x00CC,
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"voltage/L3_N": 0x0004,
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"voltage/average": 0x002A,
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}.items()
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):
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try:
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read = self.modbus.read_input_registers(address, 2)
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longs = word_list_to_long(read)
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if len(longs) == 1:
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self._publish(readable, decode_ieee(longs[0]))
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else:
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self._publish(readable, sum([decode_ieee(x) for x in longs]))
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except Exception:
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LOG.exception(f'error while reading {readable} from meter')
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if idx % 20:
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self.modbus.close()
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self.modbus.open()
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self.modbus.close()
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if __name__ == "__main__":
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try:
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with open(argv[1], "rb") as f:
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config = load(f)
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TITLE = config["printout"]["title"]
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except Exception as e:
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print(f"Usage: {argv[0]} config.toml")
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exit(1)
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client = SDM630_MQTT(config)
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client.start()
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try:
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while True:
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client.request_and_publish()
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except Exception as e:
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LOG.exception("oops")
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client.stop()
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